Machine for rolling metal bars



(No Model.) Q Sheets-Sheet l.

J. OSTRANDER. MACHINE FOR ROLLING METAL BARS.

No; 274,964. Patented Apr. 3,1883.

ATTDRNEYS N, PETERS. Pmwmho n mn wnhin wn. DV (2 4 Sheets-Shet 2.

J. OS TRA NDER. MACHINE FOR ROLLING METAL BARS.

(No Model.)

Patented Apr. 3,1883,

WITNESSES Y g 51; (FL/Q74; INVENTOR /w/m ATTORNEYS.

PETERS, Pnma'umn rn hu. Washington. D. C.

(No Model.) 4 Sheets-Sheet 3.

J. OSTRANDER. MAGHINHFOR ROLLING METAL. BARS.

No. 274,964. Patented Apr. 3, 1883,.

ATTORNEYS N. PErEns, Phm-Lnhn n m Walbinglun, ac.

(No Model.) 7 4 Sheets-Sheet 4.

' J. OST'RANDER. MACHINE FOR ROLLING METAL BARS.

a 5 y T Q 49m mvEm'oR 22? Q ATTORNEYS N PETERS. vhnwumo n ner, Wahington, n.c.

To all whom it may concern UNITED STATES PATENT FFICE.

JONATHAN OSTRANDER, OF CLEVELAND, OHIO.

MACHINE FOR ROLLING METAL BARS.

SPECIFICATION forming part of Letters Patent No. 274,964, dated April 3,1883.

Application filed February 11, 1882.

Be it known that I, JONATHAN OSTRANDER, of Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and usefulImprovements in Machines for Rolling Metal Bars; and I do hereby declarethe following to be a full, clear, and exact description ot'theinvention, such as will enable others skilled in the art to which itpertains to make and use the same.

My invention relates to machines for rolling metal bars, tubes, and thelike; and it consists in the peculiar construction ofthe same, as willbe hereinafter fully set forth and claimed.

In the drawings, Figure 1 is a plan view of a machine constructedaccording to my invention. Fig. 2 is a front end view of the same. Fig.3 is an end elevation, partly in section, showing more clearly theinternal construction of my machine. Fig. 4 is an enlarged detachedview, showing the construction and arrangement of guides used inconnection with and forming part of my machine. Fig. 5 is a view of myimproved mandrel which I prefer to use in rolling hollow bars or tubes.-Fig. 6 is a view showing one manner of forming an ingot or pile to beused for rolling hollow bars. Fig. 7 is a diagram showing the manner ofgrooving the several rolls when it is desired to roll hexagon bars.

A A A are a series of vertical rolls adjustably journaled in a frame ofsuitable construction, and driven by means of gear-wheels B B B, whichin turn are secured to and driven.

by the shaft 0. y A

D D I) are a series of horizontal rolls, which alternate with thevertical rolls A A A These rolls D D D are also driven by means ofgearwheels E E E which are secured to and driven by the shaft F. Theserolls A A A are set at an angle of ninety degrees to the rolls 1) D D Gare a series of guides, each of which is (N0 model.)

tour of the rolls preceding it, which allows the bar, as it leaves saidrolls, to pass between the jaws and be guided to the next pair of rolls.The forward ends of the guides G are held apart by means of weights 1)or springs, or in any other suitable manner. (See Fig. 4.) The object inholding the forward ends open or apart is to allow the bar, as it leavesthe roll, to easily enter between the jaws of the guides, and when thebar has passed to the rear end of the guide it forces said end outward,which in turn acts to close the forward end and cause the guides to hugthe bar and guide it This arrangement is particularly valuable inrolling hollow bars for nut-blanks and the like, as it keeps the mandrelin the center of the bar and prevents the bar from being rolled thinneron one side than the other.

H is a rest, which acts to support the ingot or the hot pile before itenters the rolls. This rest is directly opposite the-grooves ot' thefirst rolls A.

Between the rest Hand the rolls A is a sliding forked retainer or check,I, which is operated by means of a lever, as shown, or in any othersuitable manner. The function of this retainer or check is to keep thehollow ingot or pile from entering between the rolls A while themandrelis beingpassed throughit,and after themandrel is secured in thedesired position the check may be removed in any suitable manner, andthus allow of the entering of the ingot or pile between the rolls A.

J is my mandrel, which is constructed, as shown more clearly in Fig. 5,in hollow sections screwed into each other, each section being of lessdiameter than the section preceding it. By forming my mandrel hollow, asabove described, water may be passed through it and keep it cool.

Kis an adj listing-nut, which runs on a thread, a, cut on the end of themandrel. The nut K rests against a support, L, said support acting tohold the end ofthe mandrel up, and also, by means of the nut K impingingagainst it, prevent the mandrel from being drawn in through the rolls.The ingots or piles are preferably formed, as shown in Fig. 6, forhollow bars. The contour of the grooves of the rolls for rolling hexagonbars is shown in Fig. 7.

The operation of my machine is as follows:

- bar, and also to elongate said bar.

For rolling hollow hexagon bars, a hollow ingot or pile, substantiallyas shown in Fig. 6, is employed. This ingot or pile, after being heated,is placed in the rest H, and the retainer I is raised by means of alever, or in any other suitable manner, which prevents the ingot fromentering between the rolls A. The mandrel J is now passed through theingot, and from thence through to the last rolls, D the guides G actingto keep said mandrel from being caught between any of the rolls. Themandrel J is now adjusted so that the shoulder or end of each sectionshall reach just past the center of the roll, and held there by means ofthe adj ustingnut K, which rests against the support L. The check orretainer I is now lowered, and the ingot is allowed to pass between therolls A, and from thence to and between the rolls D, and so on to thelast pair of rolls, D each pair of rolls acting to reduce the diameterof the interior and exterior of the Each succeeding pair of rolls ismade to run somewhat faster than the pair preceding it. This is done toallow for the elongating of the bar, which would otherwise buckle ordrag. This is accomplishedinany suitable manner, and may be done bymeans of the gear-wheels B B B and E E E 1. In a machine for rollingmetal bars, the

combination, with a series of vertical and horizontal rolls alternatingwith each other and arrangedindependently of each other and eachsuccessive pair of rolls being driven faster than the pair preceding, ofthe sectional pivoted guides, substantially as set forth.

2. In a machine for rolling metal bars, a mandrel formed of sectionsscrewed together, substantially as set forth.

3. In a machine for rolling metal bars, the combination, with a seriesof rolls, arranged substantially as described, of guides formed ofpivoted sections reaching from one pair of rolls to the next followingpair, and provided with weights, substantiallyeas set forth.

In testimony whereoflhavesigned my name to thisspecitication in thepresence of two subscribing witnesses.

JONATHAN OSTRANDER.

Witnesses:

J NO. ORG-WELL, J r., ERNEST O. ORSBURN.

